It'll be interesting to see hash results on the 6990 and I'm sure that'll happen soon enough. I think a better question though and it's been discussed elsewhere is whether to build a rig at this point at all. If difficulty keeps increasing at current rates, you will be hard pressed to recover an investment into a 5970 or a 6950. You could do it today assuming difficulty stays where it is but that isn't going to happen and video cards depreciate rather quickly indeed.

It'll be interesting to see hash results on the 6990 and I'm sure that'll happen soon enough. I think a better question though and it's been discussed elsewhere is whether to build a rig at this point at all. If difficulty keeps increasing at current rates, you will be hard pressed to recover an investment into a 5970 or a 6950. You could do it today assuming difficulty stays where it is but that isn't going to happen and video cards depreciate rather quickly indeed.

The only thing I have going for me is I live in Chile. Cards are more expensive here. I'm from the states originally so I can bring a few used cards down, put them up for sale and mine with them until they're sold. I either break even on the cards or profit a little.

I also partially want to do it from a "help the community perspective" I'm not just in it for cash. I'm looking in to electricity costs and options now, if I can find some cheap power that makes it a lot better.

You can estimate the relative integer performance of an ATI card by multiplying the number of stream processors by the clock of the GPU.

But, you need to also take into account the Wattage that will be used. Hash per Watt is better than just straight up more Hashes.

For the most part it's better, have to figure in the other parts of the computer taking up a little power and cost of buying them.I'd prefer a slightly less efficient GPU than building a whole other computer to double my GPU's

But yeah you're right in general. Also didn't know that about multiplying steam processors by clock speed.Thanks.